EP1215376B1 - Moteur à combustion interne - Google Patents

Moteur à combustion interne Download PDF

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Publication number
EP1215376B1
EP1215376B1 EP01129683A EP01129683A EP1215376B1 EP 1215376 B1 EP1215376 B1 EP 1215376B1 EP 01129683 A EP01129683 A EP 01129683A EP 01129683 A EP01129683 A EP 01129683A EP 1215376 B1 EP1215376 B1 EP 1215376B1
Authority
EP
European Patent Office
Prior art keywords
coolant
pump
timing
chamber
gear case
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01129683A
Other languages
German (de)
English (en)
Other versions
EP1215376A2 (fr
EP1215376A3 (fr
Inventor
Samuel Aaron Mcclure
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP1215376A2 publication Critical patent/EP1215376A2/fr
Publication of EP1215376A3 publication Critical patent/EP1215376A3/fr
Application granted granted Critical
Publication of EP1215376B1 publication Critical patent/EP1215376B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/007—Adaptations for cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control

Definitions

  • the invention relates to an internal combustion engine having a cylinder block, a cylinder head and a control housing cover, wherein the control housing cover and the cylinder block form a control housing and a pump inlet chamber and a pump outlet chamber, which are separated from each other.
  • US-A-4,938,185 shows a control housing cover for an internal combustion engine, wherein in the control housing cover pump chambers and connections of a coolant system are provided in which they are formed in the control housing cover and which is formed substantially in one piece.
  • the timing cover of the present invention provides a cover for valve control.
  • the valve control is arranged in a control housing, which is formed by the front surface of the cylinder block and the control housing cover.
  • the timing cover may also be formed with molded-in terminals for connecting the timing cover to a radiator to divert coolant to and from the heat exchanger.
  • the control housing cover forms a pump inlet chamber, which may be connected to the coolant inlet to receive coolant from the heat exchanger, and a coolant outlet chamber, to which coolant may be supplied from a coolant pump.
  • the pump outlet chamber may communicate with a coolant inlet in the Cylinder block communicate to direct coolant to the cylinder block.
  • the coolant flows in a known manner through the cylinder block and to a cylinder head and is discharged from the cylinder head into a chamber for receiving hot coolant, which may also be formed in the control housing cover.
  • a chamber communicates with a coolant outlet in the control housing cover to deliver the coolant to the heat exchanger.
  • This coolant outlet can house a thermostat.
  • the timing cover can be bolted to the cylinder block and does not need to be bolted to the cylinder head. Accordingly, it is possible to provide a flexible seal between the cylinder head and the timing cover to ensure a tight connection.
  • a coolant pump may be mounted, which receives coolant through an opening in the control housing cover to the pump inlet chamber. An outlet of this coolant pump is directed through a further opening in the control housing cover to a pump outlet chamber for supplying coolant to the cylinder block.
  • the control housing cover may further include a bypass passage from the chamber for receiving hot coolant to the pump inlet chamber to allow coolant flow through the internal combustion engine before the thermostat opens.
  • a new aspect of the described timing case cover is the arrangement of the pump inlet chamber between the pump discharge chamber and the timing case.
  • FIG. 1 a front portion of an internal combustion engine 10 is shown.
  • the internal combustion engine 10 is an in-line engine having a plurality of cylinders.
  • the front surface 12 of a cylinder block 14 as well as the front surface 16 of a cylinder head 18 are shown.
  • the terms “front” and “rear” are used for purposes of illustration only and are not to be construed as limitations.
  • a control housing cover 20 and a coolant pump 22 are also shown.
  • the control housing cover 20 is attached to the cylinder block 14 by a plurality of screws 24 which extend through apertures 26 in the timing housing cover 20 and into threaded openings 28 in the cylinder block 14.
  • the coolant pump 22 has a pump housing 30 which is held on the timing cover 20 by some of the screws 24 extending through apertures 32 in the pump housing 30 and through the openings 26 in the timing cover 20 and into the threaded openings 28 in the housing Cylinder block 14 extend into it.
  • the control housing cover 20 is shown both in Fig. 1 and in Fig. 2 shown.
  • the control housing cover 20 is approximately pan-shaped and has a front wall 36 and protruding side walls 38. Additional projecting partitions 40, 42 and 44 are provided inside the control housing cover 20 to form various chambers as will be described below.
  • the protruding side walls 38, as well as the protruding partitions 40, 42, 44 all form an inner surface 46 of the control housing cover 20. This inner surface 46 engages the front surface 12 of the cylinder block 14. Between the inner surface 46 and the front surface 12, a seal (not shown) is provided to form a seal therebetween.
  • the crankshaft extends through openings 48 in the timing case cover 20.
  • An oil pump (not shown) is disposed in a circular eye 50 surrounding the aperture 48.
  • An inlet of the oil pump is shown at 52.
  • the control housing cover 20 is fixedly connected to a coolant inlet 54 for connection to a hose to receive coolant from a heat exchanger.
  • the control housing cover 20 is also fixedly connected to a coolant outlet 56.
  • the coolant outlet 56 also serves as a thermostat housing and communicates with a heat exchanger tube which delivers coolant from the engine 10 to the heat exchanger.
  • the coolant inlet 54 directs coolant into a pump inlet chamber 58, which is determined by the protruding partitions 40, 42 as well as by the front wall 36 and the front surface 12 of the cylinder block 14. Coolant flows from the pump inlet chamber 58 through an opening 60 in the coolant pump, which is mounted on the opposite side of the front wall 36.
  • the coolant pump recirculates the coolant through an opening 62 in the front wall 36 and into a pump outlet chamber 64.
  • the pump outlet chamber 64 is defined by the protruding partition wall 42 as well as the pump outlet chamber 64 protruding side wall 38 formed together with the front wall 36 and the front surface 12. Coolant flows from the pump outlet chamber 64 through the opening 66 in the front 12 of the cylinder block 14 into the cylinder block 14. The coolant then flows through the cylinder block 14 in a conventional manner, around the cylinders and up into the cylinder head 18.
  • Coolant flows from the cylinder head 18 through the opening 68 and into a chamber 68 in the control housing cover 20, which contains hot coolant. From this chamber 68, the coolant flows through the coolant outlet 56, past the thermostats, not shown, and back into the heat exchanger.
  • An elastic seal 70 is attached to the control housing cover 20 in a sealing groove surrounding the opening into the chamber 68.
  • the elastic seal 70 is made of rubber or a synthetic material capable of withstanding high coolant temperatures without decomposition. The elastic seal 70 is required because the control housing cover 20 is bolted only to the cylinder block 14 and is not bolted to the cylinder head 18.
  • a coolant bypass passage 72 is formed in the wall between the chamber 68 and the pump inlet chamber 58. This bypass passage 72 allows coolant to circulate through the engine 10 when the thermostat is closed.
  • the control housing cover 20 has a control housing 74, which is essentially determined by the protruding side walls 38 and the projecting partition 40.
  • the control housing 74 communicates with engine lubricating oil which is used to lubricate a valve timing and a valve timing chain.
  • the control housing cover 20 is formed such that the low-pressure pump inlet chamber 58, the high-pressure Pumpenauslasshunt 64 completely from the control housing 74th separates. Thus, any coolant that escapes from the pump outlet chamber 64 will enter the pump inlet chamber 58 instead of flowing into the control housing 74 where the coolant would contaminate the lubricating oil.
  • the arrangement of the coolant chambers 58, 64 within the control housing 74 improves the reliability of the engine 10 by reducing or eliminating the possibility of coolant leakage into the lubricating oil.
  • the pump housing 30 has a drain port 76 to allow coolant to drain from the cylinder block 14 and cylinder head 18. By disposing the drain port 76 in the pump housing 30, fewer machining operations are required on the cylinder block 12. The drain port may be added to the smaller pump housing 30 at a lower cost.
  • the coolant pump 22 is shown in more detail in FIG. 3.
  • the coolant pump 22 has an impeller 78 with a plurality of vanes 80.
  • the impeller 78 rotates clockwise, as shown in FIG. 3, to move the coolant out of the impeller 78 and through a chamber 82 in the pump housing 30.
  • the coolant then flows through the opening 68 in the control housing cover 20 into the pump outlet chamber 64.
  • the control housing cover 20 provides an integral, one-piece arrangement that forms both the inlet and outlet ports to flow coolant to and away from the engine 10.
  • the coolant path is formed by the control housing cover 20 for high reliability by isolating the pump discharge chamber 64 from the control housing 74.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Claims (8)

  1. Moteur à combustion interne comportant un bloc-cylindres (14), une culasse (18) et un couvercle de carter de commande (20), le couvercle de carter de commande (20) et le bloc-cylindres (14) formant un carter de commande, ainsi qu'une chambre d'admission de pompe (58) et une chambre de sortie de pompe (64), lesquelles sont séparées l'une de l'autre, caractérisé en ce que la chambre d'admission de pompe (58) entoure la chambre de sortie de pompe (64) de manière à séparer la chambre de sortie de pompe (64) du carter de commande (74).
  2. Moteur à combustion interne selon la revendication 1, caractérisé en ce que le couvercle de carter de commande (20) comporte une admission de fluide de refroidissement (54), laquelle est de préférence moulée dans ledit couvercle.
  3. Moteur à combustion interne selon la revendication 1 ou 2, caractérisé en ce que le couvercle de carter de commande (20) comporte un boîtier pour thermostat et une chambre (68) dans laquelle est amené le fluide de refroidissement depuis la culasse (18), une garniture d'étanchéité (70) étant prévue entre la culasse (18) et le couvercle de carter de commande (20).
  4. Moteur à combustion interne selon la revendication 3, caractérisé en ce que le couvercle de carter de commande (20) comporte un conduit de dérivation (72) qui permet l'écoulement du fluide de refroidissement de la chambre (68) vers la chambre d'admission de pompe (58).
  5. Moteur à combustion interne selon une ou plusieurs des revendications précédentes, caractérisé par une pompe à fluide de refroidissement (22), dont le corps est relié à une face extérieure du couvercle de carter de commande (20), la pompe à fluide de refroidissement (22) comportant une chambre de pompe et le couvercle de carter de commande (20) comporta nt un premier passage (60) débouchant qui relie la chambre d'admission de pompe (58) à la chambre de pompe et un deuxième passage (62) débouchant qui relie la chambre de pompe à la chambre de sortie de pompe (64).
  6. Moteur à combustion interne selon la revendication 5, caractérisé en ce que le couvercle de carter de commande (20) comporte un raccord d'évacuation (76) qui est de préférence moulé dans le couvercle de carter de commande (20).
  7. Moteur à combustion interne selon une ou plusieurs des revendications précédentes, caractérisé en ce que le bloc-cylindres (14) et la culasse (18), le couvercle de carter de commande (20) et la pompe à fluide de refroidissement (22) forment une voie de circulation de fluide de refroidissement entre l'admission de fluide de refroidissement (54) et la sortie de fluide de refroidissement (56).
  8. Moteur à combustion interne selon une ou plusieurs des revendications précédentes, caractérisé en ce que le carter de commande (20) est assemblé au bloc-cylindres (14) au moyen d'une pluralité de vis (24) et une garniture d'étanchéité (70) compressible flexible est disposée entre la culasse (18) et le couvercle de carter de commande (20), la garniture d'étanchéité (70) étant comprimée uniquement par les vis (24) par lesquelles le couvercle de carter de commande (20) est assemblé au bloc-cylindres (14).
EP01129683A 2000-12-15 2001-12-13 Moteur à combustion interne Expired - Lifetime EP1215376B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US738822 2000-12-15
US09/738,822 US6453868B1 (en) 2000-12-15 2000-12-15 Engine timing gear cover with integral coolant flow passages

Publications (3)

Publication Number Publication Date
EP1215376A2 EP1215376A2 (fr) 2002-06-19
EP1215376A3 EP1215376A3 (fr) 2003-07-23
EP1215376B1 true EP1215376B1 (fr) 2007-06-06

Family

ID=24969628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01129683A Expired - Lifetime EP1215376B1 (fr) 2000-12-15 2001-12-13 Moteur à combustion interne

Country Status (7)

Country Link
US (1) US6453868B1 (fr)
EP (1) EP1215376B1 (fr)
AT (1) ATE364158T1 (fr)
BR (1) BR0106138A (fr)
CA (1) CA2364775A1 (fr)
DE (1) DE50112593D1 (fr)
MX (1) MXPA01012828A (fr)

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CN204200337U (zh) * 2013-07-03 2015-03-11 福特环球技术公司 液冷式内燃发动机
CN104989545A (zh) * 2015-07-06 2015-10-21 天津雷沃动力有限公司 一种柴油发动机多功能正时齿轮室双循环冷却系统
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CN107191267B (zh) * 2017-07-13 2023-05-26 广西玉柴机器股份有限公司 齿轮室
FR3080409B1 (fr) * 2018-04-23 2020-11-27 Renault Sas Moteur a combustion interne avec plaque de fermeture d'une face de distribution
CN108397308A (zh) * 2018-05-17 2018-08-14 台州市天人合塑料包装有限公司 一种直喷式正时链总成及其加工方法
CN108915888B (zh) * 2018-07-19 2023-10-20 东风商用车有限公司 一种柴油机后端正时齿轮室盖系统
CN108952993B (zh) * 2018-07-19 2023-12-05 东风商用车有限公司 一种柴油机后端齿轮室结构
CN108930606B (zh) * 2018-09-06 2020-02-11 广西玉柴机器股份有限公司 集成式齿轮室
CN109209599B (zh) * 2018-09-13 2020-10-02 湖北谊立舜达动力科技有限公司 一种柴油发动机多功能正时齿轮室双循环冷却系统
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Also Published As

Publication number Publication date
EP1215376A2 (fr) 2002-06-19
CA2364775A1 (fr) 2002-06-15
MXPA01012828A (es) 2002-07-09
BR0106138A (pt) 2002-08-13
DE50112593D1 (de) 2007-07-19
EP1215376A3 (fr) 2003-07-23
US6453868B1 (en) 2002-09-24
ATE364158T1 (de) 2007-06-15
US20020073951A1 (en) 2002-06-20

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